<template>
  <div class="login">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form">
      <h3 class="title">一知随记</h3>
      <el-form-item prop="username">
        <el-input
          v-model="loginForm.username"
          type="text"
          auto-complete="off"
          placeholder="手机号"
        >
          <svg-icon slot="prefix" icon-class="user" class="el-input__icon input-icon"/>
        </el-input>
      </el-form-item>
      <el-form-item prop="code">
        <el-input
          v-model="loginForm.code"
          auto-complete="off"
          placeholder="验证码"
          style="width: 63%"
          @keyup.enter.native="handleLogin"
        >
          <svg-icon slot="prefix" icon-class="validCode" class="el-input__icon input-icon"/>
        </el-input>

        <div class="login-code">
          <el-button
            type="primary"
            @click="getVerify"
            style="width:100%;"
          >
            <span v-show="show">获取验证码</span>
            <span v-show="!show" class="count">{{ count }} s</span>
          </el-button>
        </div>

      </el-form-item>
      <el-form-item style="width:100%;">
        <el-button
          :loading="loading"
          size="medium"
          type="primary"
          style="width:100%;"
          @click.native.prevent="handleLogin"
        >
          <span v-if="!loading">登 录</span>
          <span v-else>登 录 中...</span>
        </el-button>
        <div style="float: left;" v-if="login">
          <router-link class="link-type" :to="'/login'">密码登录</router-link>
        </div>
      </el-form-item>
    </el-form>
    <!--  底部  -->
    <div class="el-login-footer">
      <span>Copyright yizhi-w.com All Rights Reserved.</span>
      <span>ICP主体备案号:  辽ICP备2022012082号</span>
    </div>
  </div>
</template>

<script>
import Cookies from 'js-cookie'
import { getSms } from '@/api/login'

export default {
  name: 'Login',
  data() {
    return {
      codeUrl: '',
      loginForm: {
        username: '',
        code: ''
      },
      loginRules: {
        username: [
          { required: true, trigger: 'blur', message: '请输入您的手机号' }
        ],
        code: [
          { required: true, trigger: 'blur', message: '请输入验证码' }
        ]
      },
      loading: false,
      login: true,

      redirect: undefined,
      show: true,
      count: '', // 初始化次数
      timer: null,

      queryParams: {
        phone: null
      }
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  created() {
    this.getCookie()
  },
  methods: {
    getVerify() {
      // 验证手机号
      if (this.checkPhone() === false) {
        return false
      } else {
        this.queryParams.phone = this.loginForm.username
        getSms(this.queryParams).then(res => {
          this.$message.success('验证码发送成功')
          const TIME_COUNT = 60 //更改倒计时时间
          if (!this.timer) {
            this.count = TIME_COUNT
            this.show = false
            this.timer = setInterval(() => {
              if (this.count > 0 && this.count <= TIME_COUNT) {
                this.count--
              } else {
                this.show = true
                clearInterval(this.timer) // 清除定时器
                this.timer = null
              }
            }, 1000)
          }
        })
      }
    },

    checkPhone() {
      let phone = this.loginForm.username
      if (!/^1[3456789]\d{9}$/.test(phone)) {
        this.$message.error('请填写正确的手机号')
        return false
      }
    },

    getCookie() {
      const username = Cookies.get('username')
      const code = Cookies.get('code')
      this.loginForm = {
        username: username === undefined ? this.loginForm.username : username,
        code: code === undefined ? this.loginForm.code : code,
        loginType: 'sms'
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.$store.dispatch('Login', this.loginForm).then(() => {
            this.$router.push({ path: this.redirect || '/' }).catch(() => {
            })
          }).catch(() => {
            this.loading = false
          })
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
.login {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  background-image: url("../assets/images/login-background.jpg");
  background-size: cover;
}

.title {
  margin: 0px auto 30px auto;
  text-align: center;
  color: #707070;
}

.login-form {
  border-radius: 6px;
  background: #ffffff;
  width: 400px;
  padding: 25px 25px 5px 25px;

  .el-input {
    height: 38px;

    input {
      height: 38px;
    }
  }

  .input-icon {
    height: 39px;
    width: 14px;
    margin-left: 2px;
  }
}

.login-tip {
  font-size: 13px;
  text-align: center;
  color: #bfbfbf;
}

.login-code {
  width: 33%;
  height: 38px;
  float: right;

  img {
    cursor: pointer;
    vertical-align: middle;
  }
}

.el-login-footer {
  height: 40px;
  line-height: 40px;
  position: fixed;
  bottom: 0;
  width: 100%;
  text-align: center;
  color: #fff;
  font-family: Arial;
  font-size: 12px;
  letter-spacing: 1px;
}

.login-code-img {
  height: 38px;
}
</style>
